Although aquaculture is the fastest growing food producing sector in the world and generates significant employment opportunities at multiple scales, men and women are not necessarily able to participate in aquaculture value chains in the same way, and benefits may not be evenly distributed between them. This paper aims to elucidate current knowledge of gendered engagement in and returns from aquaculture value chains. It does so by presenting a review of existing evidence on gender issues in aquaculture value chains along five key dimensions: gender division of labor, distribution of benefits, access and control over assets and resources, gender and social norms, power relations and governance. Subsequently, the potential results for value chain performance and potential upgrading pathways are presented.